Who's who: These were the top 5 Houston energy transition interviews of 2023

Here were the top energy transition interviews on EnergyCapital — according to its readers. Photos courtesy

Editor's note: As the year comes to a close, EnergyCapital is looking back at the year's top stories in Houston energy transition. EnergyCapital launched specifically to cover the energy transition community — and that includes the people who power it. With weekly interviews, we spoke to dozens of these individuals and some resonated more than others to readers. Be sure to click through to read the full interviews or stream the podcast episode.

Kelsey Hultberg, executive vice president of corporate communications and sustainability at Sunnova Energy

Kelsey Hultberg, executive vice president of corporate communications and sustainability at Sunnova Energy, joins the Houston Innovators Podcast. Photo courtesy of Sunnova

Several years ago, Kelsey Hultberg decided to make a pivot. Looking for a role with career growth opportunities, the communications professional thought she'd find something at an oil and gas company, but then she met John Berger, founder and CEO of Sunnova, who was looking for someone to stand up their communications team amidst the solar energy company's growth.

"He hooked me," Hultberg shares on the Houston Innovators Podcast. "He said, 'I've got big plans for this company. I see where this energy industry is going, I see that we're prime for a transition, and I want to take this company public.' And I started a few weeks later."

Hultberg has been telling the story for Sunnova — which equips customers with solar and storage technology, providing them with energy independence — ever since, through scaling, new technologies, and its IPO in 2019.

Continue reading the interview from October.

PJ Popovic, CEO and founder of Rhythm Energy

Houston-based Rhythm Energy CEO and founder, PJ Popovic, discusses the landscape of Texas' energy market and how renewables should be incorporated. Photo courtesy of Rhythm

After experiencing the hottest day on record this past Fourth of July, PJ Popovic — CEO and founder of green energy retailer Rhythm Energy — explained what extreme temperatures like these mean for Texas’ energy market and the role renewables will play in addressing increased demand response.

Headquartered in Houston, Rhythm Energy launched two years ago and offers a variety of 100 percent renewable energy backed plans, from wind to solar. Popovic discussed with EnergyCapital where he thinks renewables fit into Texas’ energy consumption and grid reliability issues in an interview.

Continue reading the interview from July.

Aniruddha Sharma, co-founder and CEO of Carbon Clean

Aniruddha Sharma of Carbon Clean weighs in on his North American expansion, the impact of the Inflation Reduction Act, and more. Photo via carbonclean.com

Earlier this year, a growing carbon capture company announced its new North American headquarters in Houston. Now, the company is focused on doubling it's headcount before the end of 2023 to meet demand.

Carbon Clean, which has a technology that has captured nearly two million tons of carbon dioxide at almost 50 sites around the world, opened its new office in the Ion earlier this year. The company is now building out its local supply chain with plans to rapidly expand.

In an interview with EnergyCapital, Co-Founder, Chair, and CEO Aniruddha Sharma weighs in on the new office, how pivotal the Inflation Reduction Act has been for his company's growth, and the future of Carbon Clean.

Continue reading the interview from August.

Vibhu Sharma, founder of InnoVent Renewables

Vibhu Sharma founded InnoVent Renewables to make a sustainable impact on tire waste. Photo courtesy

With over a billion cars currently on the road — each with four tires that will eventually end up discarded, one Houstonian is hoping to create the infrastructure to sustainably dispose of tire waste now and into the future.

Announced earlier this month, Vibhu Sharma founded InnoVent Renewables to establish production facilities that utilize a proprietary continuous pyrolysis technology that is able to convert waste tires, plastics, and biomass into fuels and chemicals.

In a Q&A with EnergyCapital, Sharma explains his plans to sustainably impact the tire waste space and his vision for his company.

Continue reading the interview from September.

Cindy Taff, founder and CEO of Sage Geosystems

In a Q&A with EnergyCapital, Cindy Taff of Sage Geosystems explains why she's so optimistic about geothermal and her company's technology. Photo courtesy of Sage

Geothermal energy is an integral part of decarbonizing the energy industry, and Sage Geosystems CEO Cindy Taff believes her company's tech has what it takes to lead the way.

Founded in Houston in 2020, Sage Geosystems is focused on two business lines — energy storage and geothermal. In addition to developing these technologies, Taff says Sage has "cracked the code" on both reducing costs and maximizing electricity output. Sage has customers ranging from Nabors, the world’s largest land-based drilling company, and Virya LLC, an investor in climate ventures with high impact of eliminating global greenhouse gas emissions or sequestering CO2

In a Q&A with EnergyCapital, she explains why she's so optimistic about geothermal and her company's technology.

Continue reading the interview from December.

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A View From HETI

What is the future of "the fifth utility"? Getty Images

Digital infrastructure is the dominant theme in energy and infrastructure, real estate and technology markets.

Data, the byproduct and primary value generated by digital infrastructure, is referred to as “the fifth utility,” along with water, gas, electricity and telecommunications. Data is created, aggregated, stored, transmitted, shared, traded and sold. Data requires data centers. Data centers require energy. The United States is home to approximately 40% of the world's data centers. The U.S. is set to lead the world in digital infrastructure advancement and has an opportunity to lead on energy for a very long time.

Data centers consume vast amounts of electricity due to their computational and cooling requirements. According to the United States Department of Energy, data centers consume “10 to 50 times the energy per floor space of a typical commercial office building.” Lawrence Berkeley National Laboratory issued a report in December 2024 stating that U.S. data center energy use reached 176 TWh by 2023, “representing 4.4% of total U.S. electricity consumption.” This percentage will increase significantly with near-term investment into high performance computing (HPC) and artificial intelligence (AI). The markets recognize the need for digital infrastructure build-out and, developers, engineers, investors and asset owners are responding at an incredible clip.

However, the energy demands required to meet this digital load growth pose significant challenges to the U.S. power grid. Reliability and cost-efficiency have been, and will continue to be, two non-negotiable priorities of the legal, regulatory and quasi-regulatory regime overlaying the U.S. power grid.

Maintaining and improving reliability requires physical solutions. The grid must be perfectly balanced, with neither too little nor too much electricity at any given time. Specifically, new-build, physical power generation and transmission (a topic worthy of another article) projects must be built. To be sure, innovative financial products such as virtual power purchase agreements (VPPAs), hedges, environmental attributes, and other offtake strategies have been, and will continue to be, critical to growing the U.S. renewable energy markets and facilitating the energy transition, but the U.S. electrical grid needs to generate and move significantly more electrons to support the digital infrastructure transformation.

But there is now a third permanent priority: sustainability. New power generation over the next decade will include a mix of solar (large and small scale, offsite and onsite), wind and natural gas resources, with existing nuclear power, hydro, biomass, and geothermal remaining important in their respective regions.

Solar, in particular, will grow as a percentage of U.S grid generation. The Solar Energy Industries Association (SEIA) reported that solar added 50 gigawatts of new capacity to the U.S. grid in 2024, “the largest single year of new capacity added to the grid by an energy technology in over two decades.” Solar is leading, as it can be flexibly sized and sited.

Under-utilized technology such as carbon capture, utilization and storage (CCUS) will become more prominent. Hydrogen may be a potential game-changer in the medium-to-long-term. Further, a nuclear power renaissance (conventional and small modular reactor (SMR) technologies) appears to be real, with recent commitments from some of the largest companies in the world, led by technology companies. Nuclear is poised to be a part of a “net-zero” future in the United States, also in the medium-to-long term.

The transition from fossil fuels to zero carbon renewable energy is well on its way – this is undeniable – and will continue, regardless of U.S. political and market cycles. Along with reliability and cost efficiency, sustainability has become a permanent third leg of the U.S. power grid stool.

Sustainability is now non-negotiable. Corporate renewable and low carbon energy procurement is strong. State renewable portfolio standards (RPS) and clean energy standards (CES) have established aggressive goals. Domestic manufacturing of the equipment deployed in the U.S. is growing meaningfully and in politically diverse regions of the country. Solar, wind and batteries are increasing less expensive. But, perhaps more importantly, the grid needs as much renewable and low carbon power generation as possible - not in lieu of gas generation, but as an increasingly growing pairing with gas and other technologies. This is not an “R” or “D” issue (as we say in Washington), and it's not an “either, or” issue, it's good business and a physical necessity.

As a result, solar, wind and battery storage deployment, in particular, will continue to accelerate in the U.S. These clean technologies will inevitably become more efficient as the buildout in the U.S. increases, investments continue and technology advances.

At some point in the future (it won’t be in the 2020s, it could be in the 2030s, but, more realistically, in the 2040s), the U.S. will have achieved the remarkable – a truly modern (if not entirely overhauled) grid dependent largely on a mix of zero and low carbon power generation and storage technology. And when this happens, it will have been due in large part to the clean technology deployment and advances over the next 10 to 15 years resulting from the current digital infrastructure boom.

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Hans Dyke and Gabbie Hindera are lawyers at Bracewell. Dyke's experience includes transactions in the electric power and oil and gas midstream space, as well as transactions involving energy intensive industries such as data storage. Hindera focuses on mergers and acquisitions, joint ventures, and public and private capital market offerings.

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